We've had a Dyson for about five years. It is by far the best vacuum we have ever owned in 34 years of marriage! It is amazing how much stuff gets picked up everyday. I have a black lab that sheds alot, and with previous vacuums I only had to empty the bag about once a month. With the Dyson it has such a stronger suck that I empty it each time I use it. It makes me wonder how much dirt and hair were left in the carpet prior to owning the Dyson. I'm sold on Dyson and will probably never own another brand.